Development and Validation of Numerical Reasoning Test for Grade 7~8 Students
In the present study,items of numerical reasoning were developed for Grade 7 and Grade 8 students in China,which was based on the subscale numerical reasoning of the Differential Aptitude Test from America.Twenty-two items were included in the initial test.More than 7500 7th and 8th grade students participated in the study.After exploratory factor analysis,confirmatory factor analysis and Rasch analysis,the final instrument consisted of 18 items with good reliability and validity,which showed no gender differential item functioning.It suggests that the test is an effective and reliable tool for assessing 7th and 8th grade students'numerical reasoning.The test can be used to identify underachieving students who have a high numerical ability.In addition,it can be used to screen for students with mathematical learning difficulties that caused by insufficient numerical reasoning ability.Therefore,the application of the test is helpful for educators to provide assistance to students who need help.